John G. Chen
USATT#: 198570
| Coach Level: Club | Certified Umpire
1981 2035
2017 Des Moines Open
25 Mar 2017 - 25 Mar 2017
25 Mar 2017 - 25 Mar 2017
This page explains how John G. Chen (USATT# 198570)'s rating went from 1981 to 2035 at the 2017 Des Moines Open held on 25 Mar 2017 - 25 Mar 2017. The links below take you to pages that describe various aspects of the rating processor.
Introduction
Initial Rating
The rating processor goes through 4 passes in order. The links take you to pages that provide detailed explanations of the calculations during each of the 4 passes.